Sept. 1896.] Dyar : Life History of Euclea Delphinii. 127 



for the smallest horns to be crowded toward the neighboring large ones, 

 whereby the subdorsal horn on joint 6 approaches the one on 5, that on 

 7 the one on 8, etc. Setae rather long, stiff, sharp pointed, three from 

 the apex of each horn. Cuticle perfectly smooth, transparent. The 

 larva is pale yellowish, the color of the egg, without marks. It does 

 not feed at all in this stage, becoming quiescent immediately after 

 hatching and molting in three days. Length of larva i mm. 



S/age II. — Subdorsal horns on joints 3 to 5, 8, 11 and 12 large, 

 rounded, bristly with stiff, black-tipped spines; those on joints 6, 7, 9 

 and 10 very small, rounded, each with one spine; lateral row wiih many 

 spines, the horns on joints 3 and 4 larger than the rest. Body squarish, 

 ridges marked by tlie large tubercles, widest through joints 3 and 4. 

 All pale yellowish white, much more opaque than before. Skin finely 

 granular dotted ; no marks. Head pale, eye black, mouth brown, 

 width .3 mm. Toward the end of the stage the horns of subdorsal row 

 on joints 4, 5 and 1 1 become brick red in some examples. Length i 

 to 2 mm. 



Stage III — ^'ery shining, green, but principally from the alimen- 

 tary canal showing by transparency. A narrow, faint yellow subdorsal 

 line along the ridge; horns on joints 3 to 5, 8, 11 and 12 bright red ; 

 lateral row colorless with green tips. The horns are moderately well 

 covered with black-tipped spines; the subdorsal ones on joints 6, 7, 9 

 and 10 have only one or two spines. Skin finely and rather remotely 

 watery granular. Dorsal and ad-dorsal depressed areas indicated by 

 whitish dots, also the large lateral intersegmental (4). The larvae eat 

 rounded patches on either side of the leaf (Plate V, Fig. 13). Width 

 of head .4 mm.; length of larva 2 to 3 3 mm. 



Stage IV. — Resembles the mature larva in shape and appearance. 

 Green, a narrow yellow subdorsal line, the same horns red as before. 

 The subdorsal horns on joints 6 and 10 are very small with three or four 

 spines, those on joints 7 and 9 moderate with six to eight spines. A 

 narrow pale dorsal line. Double intersegmental dorsal, ad-dorsal and 

 two lateral obliquely set rows of white glandular dots. The lateral horn 

 on joint 4 is a little larger ihan the others. Head whitish, the eye 

 black ; width .6 mm. Skin granules rather remote, concblorous or 

 colorless, non-setiferous, conical but not sharp pointed, about .005 mm. 

 in diameter. All the horns are smooth, without skin granules. No 

 trace of caltropes. Length of larva 3.3 to 5.3 mm. 



Stage V. — Head shining, very pale greenish, eye black, mouth 

 brown ; width .8 mm. Green ; the skin transparent with a faint green 



